Woeth



No. 609,545. Patented Aug. 23, R3198.

D. H. LINGSWORTH.

WRENCH.

(Application filed Feb. 16. 1898.)

(No Model.)

UNITED STATES PATENT OFFICE.

DANIEL H. HOLLINGSWORTH, OF NEW YORK, N. Y.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent N 609,545, dated August 2 3, 1898. Application filed February 16, 1898. Serial No. 670,610, (No model.)

To aZZ whom it may concern:

Be it known that I, DANIEL H. HOLLINGS- WORTH, of the city of New York, borough of Brooklyn,county of Kings, State of New York, have invented new and useful Improvements in Pipe -\Vrenches, of which the following is a specification.

I will describe a pipe wrench embodying my improvements and then point out the novel features in the claim.

In the accompanying drawings, Figure 1 is a side View, partlyin section, of a pipe-wrench constructed according to myinvention; and Fig. 2 is a perspective view of the same.

Ct designates the body of the wrench, comprising a handle I) and a partly-bifurcated fixed and serrated jaw portion 0. The upper side of the handle 1) contains an open cavity (1, formed in line with and extending into the bifurcation of the jaw c and tapering in depth toward the same.

e is a movable jaw arranged to work within the bifurcation of the jaw c and is pivotally connected to the said jaw c by a pin f. The jaw 6 contains teeth at its free end and is so shaped and arranged as to take firm hold of any pipe when acting in conjunction with the aw c.

g is a coil-spring arranged within the open cavity 61 and tending to close the movable jaw e, the taper of the cavity being sufficient to admit of its free swinging movements. The ends of this spring (one of which is shown in section) are secured to eyebolts h h by means of their convolutions intermeshing and closely fitting the screw-threads of the bolts. One

of the eyebolts h is attached to a pin '5, secured to the handle I), and the other eyebolt is attached to a hook secured to the shank of the jaw e in such a manner that when the jaw is closed the coil-spring g will be in alinement, or very nearly so, with the pivot f. By this arrangement the spring will offer comparatively little resistance during the initial opening of the jaw to surround and grip a pipe, but will exert gradually-increasin g force as the jaw continues to open, thus serving to grip large pipes equally as well as small ones. By means of the spring so arranged the wrench can also be applied with great facility for overhead work, or, when circumstances require it, be inverted in order to grasp a pipe.

By my improved manner of attaching and locating the spring it can be kept free from dirt and oil tending to clog it, and can also be readily replaced by a new one when required. I

I claim- In a pipe-wrench,the combination of a body portion comprising a handle and a partly-bifurcated and serrated jaw, the upper side of the handle having anopen cavity formed in line with, and extending into, the bifurcation of the jaw; a serrated movable jaw pivoted to and arranged to worklwithin the bifurcation of the fixed jaw; and a coil-spring attached to eyebolts arranged to work in the said open cavity of the handle, one end being attached to a fixed pin and the other end being attached to the shank of the movable jaw; the latter point of attachment, the pivot of the jaw and the coil-spring being approximately in alinement with one another, when the said movablejaw is closed, substantially as described.

DANIEL H. HOLLINGSWORTH.

Witnesses PHILIP J. OREILLY, Gno. WADMAN. 

